Machine for making radiator-core sections



.Mar. 27, 1923. 1,449,596.

LFRAIDUS. v

MACHINE FOR MAKING RADIATOR CORE SEC HONS.

FILED JULY 8' 1920. 2 SHEETSSHEET lum/whom 705 iw/zua Mar. 27, 1923.

'1. FHAIDUS.

MACHINE FOR MAKING RADIATOR CORE SECTIONS.

FILED JULY8 2 sHE ETS-s HE'ET 2- Patented Mar. 27, 1923. j

UNITED STATES PATENT OFFICE;

JOE FRAIDUS, or NEW RK, NEw JEBsEY, ASSIGNOR TO SAMUEL sonmrnn, NEW YORK, N. Y. I

MACHINE FOR MAKING RADIATOR-CORE SECTIONS.

Core Sections, of which theffollowing is a specification. I

My invention relates to machines for shaping and bending sheet metal and has particular reference to machines for making the corrugated sheets used in radiatormanufacture, for building up the cores of radiators for automobiles, trucks, tractors, air lanes and the like. I

N ne of the objects of this invention is to i provide a machine which will produce sheet 1 metal pieces in such a shape that they may Y pended claims.

varying be properly and easily fitted together and. joined to give proper liquid passages and spaces, and'provide ample cooling surface for the liquid and ample radiating surface.

Another object is to provide a machine of simple and low cost construction, having easily renewable parts and in which adjustments may readily be madeto accommodate widths of sheets. a. I

A further object is to provide a machine in which the parts may be readily changed to change the form of the finished sheet metal pieces.

Another object is to provide a machine which will produce sheet metal pieces'fthat when properly joined will i give a radiator of pleasing appearance, and efiicient design, suitablefor the uses for which it isv made. Other objects willin part be obvious'and ,in part be pointed out hereinafter.

The invention accordingly consists in the features. of construction, combinations ,of elements and arrangement of parts which will be exemplified in the construction hereinafter described and of which the scope of application will be indicated in the ap- In the accompanying drawings, 'in'which is shown one of various possible'illustrative embodiments of this. invention, J

Figure lis a front elevation, partly in section,of a machine embodying the invention thickness of metal, and varying v p a members 1,- 1 extend} on the base between H Fig. 2 ls' a side elevation thereof :(partly V 'Application'filed July 8, 1920. I Serial No. 394,685.

diagrammatic) viewed along line 2-,-2 of Flg. 1;

Fig. 3 is'a sectional' view of the-intermeshing corrugated rolls;

Fig. is a perspectiv i w of a Section of a radlator through the center of the tubes,

showing thehoneycomb arrangement;

Fig. .5 is a lengthwise sectional view through a set of the tubes;

Fig. 6 is a front view of th h e m section of the radiator showing a modified form; and a Fig. 7' is a perspective view of of one sheet formed by the machine shown.

Referring'in detail to the drawing, "thei frame ofthe machine comprises a base .10

having upright members"9,"9, each" having a slot 8 for a purpose to be later described. On each upright is a lower angle piece 17 rigidly fixed to the upright-by machilie'bolts' or other desired means. An upper angle piece 6 is fixed to each upright by ma'chine the end bolts. or screws such as 5 passing through slots 4, 4c,.in-'each angle piece 6 so that-the '1 same maybe adjusted vertically within the limits-of slots 4,; 4 by the action 'offnuts 3, 3and 3 on the spacer ro'ds'2, 2, which are fixed inthe'lower angle piece 7'. Web

theuprightsQ, 9 for purposes of strength:

Split pillow blocks'20, 20are mounted on lower angle pieces '7, 7 and similar split pillow blocks 30, 30 are mounted above the blocks 20, 20 on angle piecesG, 6. The pillow blocksQO, 20 act as bearings for a shaft 19 which extends through slots 8, 8, and

von which a drive pulley'18 is mounted, a

belt to'deliv'er power to said pulley being shown in section at 17 (Fig. 13.

Mounted on the shaft 19 is a main-corru'gated roll- 16 and two pairsof toothed plates 15, 15' and 14, 14'. A-pair of guide plates 13, 13 are mountedon the shaft and clamp against the outer toothed plates 14,

14;, being secured to the main roll--16 by bolts 12 which extend throughthe plates A nut 21 threaded-one reduced portion of the shaft 19 is adapted to act against a collar 23 interposed between the nut and guide plate 13 to force the assembly against an integraleollar ot'the shaft andl'rthus fixes the position of the roll and toothed lates.

It will be noticed that the use of a collar 23 permits of the mounting of a longer assembly set of roll and plates on the shaft 19, if desired.

In pillow blocks 30 is a shaft 29 on which is another assembly similar to the lower assembly already described and comprising a main roll 26, an outer pair of toothed plates 24, 24 and an inner pair of toothed plates 25, 25, this assembly being held together by bolts 27 and positioned against integral collar 32 by means of a nut 31 and a collar 28.

. Vertical adjustment of the center to center distance between shafts 19 and 29 may be made by adjustment of upperanglepieces 6 holding the pillow blocks 30 by loosening bolts 5, 5, threading down nuts 3, 3, and threading on nuts 3, 3, then clamping bolts 5, 5 into position.

It will be noted that the guide plates 13, 13, within which the assembly is mounted are of sufficient diameter to overlap the upper assembly. In this way strips of metal fed into the rolls are guided by plates, 13, 13 between the rolls.

The upper assembly mav also be lengthened when desired, in conjunction with a lengthened lower assembly, by the similar arrangement of collar 28 and nut 31 on shaft 29.

It will also be seen that the collar 32 on the upper shaft together with the collar 22 on the lower shaft positively position the members of the assembly with relation to each other, the upper collar 32 being of the thickness of the lower collar 22 plus the thickness of the guide plate 13. v Inthis way positive longitudinal alignment of the mem bers of the assembly is assured, each member being of the width of its intermeshing member and the outer faces of the collars 22, 32 being equidistant from the reduced bearing portions of the shafts 19, and 29 respectively.

Referring now toth'e sectional view of the rolls in Fig. 3, the main rolls 16 and 26 have in'termeshing corrugations of a ratchet shape with blunt jointing portions at the, crests and depressions. This ratchet shapfe causes the center portion of the sheet metal plates to be bent as shown in Fig. 4 with each alternate face 33 wider than the adjacent intervening faces 34, the alternate faces 33 and 34 of the roll 16 and the alternate faces 33" and 34c of the roll 26 being of shape and width to correspond to the faces 33 and 3& respec tively.

The outer toothed plates 14:, 14; of the lower assembly and plates 24, 24c of the upper assembly intermesh respectively, plates 14: and 24'. being shown in Fig. 3. These plates have teeth which in contour are substantially identical with the main roll corrugation but in one assembly project slightly beyond the main roll corrugations as shown at 24c and in the other assembly are depressed a corresponding distance as shown at 14;. The result of the action of these rolls is to press a groove into the strip of metal at each end bordering the edge of the sheet metal strip, shown in section at and 35 Fig. 5. If two strips as a, b (Fig. 5) are properly placed together back to back, the projecting portion of the edge groove of one will fit against the projecting edge groove of the other and soldering the two together will hold their edges together and provide space between the main corrugated portions equal in width to double the projection distance.

The inner toothed plates 15, 15 of the lower assembly and 25, 25 of the upper assembly, intermesh respectively, 15 and 25 being shown in Fig. 3. These plates have contours parallel and coincident with the outer toothed plates except at the extreme crest and depression points, where they project, or re-enter, aslight distance so that depressions of small size are formed at the crest of each corrugation and projections at the depression of each corrugation, giving portions spaced the length of,the corrugation face, as shown at 36, 36 (Fig. 3) which co-operate so that the several plates may beassembled correctly and held from slipping either transversely or longitudinally.

It will be apparent that when a plurality of these plates are assembled, water or fluid space will be provided as, between a and b (Fig. 3) and air space will be provided on the opposite side of each sheet from that adjacent the water or fluid to be cooled. V

The shape of the air passages is shown in Fig. 4 being of essentially honeycomb nature but in this embodiment presenting a trapezoidal shape. The corrugated rolls and the toothed plates may of course be constructed so as to produce different shapes of radiator core sections as for example that of a square on edge-as illustrated in Fig. 6.

apparatus in which the several objects of this invention are achieved and which is well adapted to meet the conditions of practical use. i

As various possible embodiments be made of the above invention and as various changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the ac companying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a machine of the class described, a roll assembly comprising a main corrugating roll, a pair of depression forming plates adjacent said roll, one on either face,,a pair of grooving plates adjacent sald depression I It will thus be seen that there is provided forming plates, and means to hold said assembly together. ping the outer elements of said second roll 10 2. In a machine of the class described, a assembly. ,1 roll assembly comprising a roll and a plural- Signed at New York city, in the county of 8 ity of plates attached thereto, a second roll New York and State of New York this 15th assembly having elements intermeshing with day of March A. 1)., 1920. v the roll and plates of said first mentioned roll, and guide plates on the outer faces of J OE'FRAIDUS said first mentioned roll assembly, overlap 

